Computational analysis of the electrostatic environment and flashover performance of a suspension linkstick for live-line work on high voltage power lines

Serdyuk, Yuriy V.; Gubanski, S.M.; Beattie, Jay; Schmidt, S.; Kreway, K.

doi:10.1109/mei.2019.8575683

Cited by 5 publications

(1 citation statement)

References 11 publications

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“…Live working is an important means and method for the detection, maintenance and transformation of power grid equipment, and an important technical measure to ensure the reliable and stable operation of power system. In order to ensure the reliability of UHV DC transmission, it is necessary to develop the live working study [4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Electric field characteristics of UHV DC tension string during insulator replacement by two workers

Ding

Sun

et al. 2021

IET Science Measure & Tech

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The UHV DC tension insulator strings are often large-tonnage suspension porcelain or glass insulators with high mechanical strength. The single insulator is heavy, so two workers working at the same time are required to make a replacement on insulator strings in live working conditions. One of the key problems that must be solved in live working conditions is to select an appropriate way to reach the working position and realize the potential transfer between two workers. In this paper, the electric field calculation model of live working of ±800 kV tension strings was established. The process that two workers enter and leave the working position along the tension string and different conditions that two workers replace insulators were simulated and analyzed, and distribution characteristics of the electric field of insulator strings and live workers were obtained. According to the calculation results, when the two workers replace the tension insulators in different tension strings, it is easy to realize the potential transfer, so as to reach the same potential for work. The study results of this paper provide a basis for the selection of replacement method of large-tonnage single insulator by two workers, and a theoretical basis for UHV DC live working.

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Section: Introductionmentioning

confidence: 99%

Electric field characteristics of UHV DC tension string during insulator replacement by two workers

Ding

Sun

et al. 2021

IET Science Measure & Tech

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A Review of Polyolefin‐Insulation Materials in High Voltage Transmission; From Electronic Structures to Final Products

Bjurström,

Edin,

Hillborg

et al. 2024

Advanced Materials

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This review focuses on the use of polyolefins in high‐voltage direct‐current (HVDC) cables and capacitors. A short description of the latest evolution and current use of HVDC cables and capacitors is first provided, followed by the basics of electric insulation and capacitor functions. Methods to determine dielectric properties are described, including charge transport, space charges, resistivity, dielectric loss, and breakdown strength. The semicrystalline structure of polyethylene and isotactic polypropylene is described, and the way it relates to the dielectric properties is discussed. A significant part of the review is devoted to describing the state of art of the modeling and prediction of electric or dielectric properties of polyolefins with consideration of both atomistic and continuum approaches. Furthermore, the effects of the purity of the materials and the presence of nanoparticles are presented, and the review ends with the sustainability aspects of these materials. In summary, the effective use of modeling in combination with experimental work is described as an important route toward understanding and designing the next generations of materials for electrical insulation in high‐voltage transmission.

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A Study on the Influence of Contamination and Wear on the Surface Discharge Characteristics of Insulated Blankets Used in Live Operations

Zhou,

Mao,

Qiu

et al. 2023

2023 IEEE 7th Conference on Energy Internet and Energy System Integration (EI2)

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Computational analysis of the electrostatic environment and flashover performance of a suspension linkstick for live-line work on high voltage power lines

Cited by 5 publications

References 11 publications

Electric field characteristics of UHV DC tension string during insulator replacement by two workers

Electric field characteristics of UHV DC tension string during insulator replacement by two workers

A Review of Polyolefin‐Insulation Materials in High Voltage Transmission; From Electronic Structures to Final Products

A Study on the Influence of Contamination and Wear on the Surface Discharge Characteristics of Insulated Blankets Used in Live Operations

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